New GPI-2 release (v1.4.0)

Functionality:

• SLURM support
• Auto-tools based build system
• Clean-up of GPU support
• Implement GASPI_QUEUE_FULL
• Implement gaspi_read_notify, gaspi_read_list_notify
• Support for connect-ib (atomics) with Infiniband extensions
• GASPI spec compliance
  • queue_depth -> queue_size_max
  • add gaspi_passive_transfer_size_min
  • gaspi_segment_create more spec-compliant: establish communication infrastructure (STATIC)
• Remove restricition of 255 elements for gaspi_allreduce operations
• Statistics for segment related functions
• configurability (gaspi_config_t):
  • elems in allreduce
  • device options:
    • tcp: port
    • ib: device, mtu, port check
  • sn persistent
  • sn timeout
• Add further tests, remove some redundant ones

Fixes:

• Fix maximum transfer size issues
• Fix issues on large-scale
• Fix timeout on topology broadcast
• SN: exponential backoff delay
• SN: simplify events handling
• SN: use an allgather for collective operations (e.g. gaspi_segment_create)
• TCP shutdown and clean-up
• Memory and resources leaks
• Other small fixes
• Several refactorings for less duplication and better readability.

Happy GPI-2 hacking!